1 /* 2 * MPC85xx RDB Board Setup 3 * 4 * Copyright 2009 Freescale Semiconductor Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2 of the License, or (at your 9 * option) any later version. 10 */ 11 12 #include <linux/stddef.h> 13 #include <linux/kernel.h> 14 #include <linux/pci.h> 15 #include <linux/kdev_t.h> 16 #include <linux/delay.h> 17 #include <linux/seq_file.h> 18 #include <linux/interrupt.h> 19 #include <linux/of_platform.h> 20 21 #include <asm/system.h> 22 #include <asm/time.h> 23 #include <asm/machdep.h> 24 #include <asm/pci-bridge.h> 25 #include <mm/mmu_decl.h> 26 #include <asm/prom.h> 27 #include <asm/udbg.h> 28 #include <asm/mpic.h> 29 30 #include <sysdev/fsl_soc.h> 31 #include <sysdev/fsl_pci.h> 32 33 #undef DEBUG 34 35 #ifdef DEBUG 36 #define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args) 37 #else 38 #define DBG(fmt, args...) 39 #endif 40 41 42 void __init mpc85xx_rdb_pic_init(void) 43 { 44 struct mpic *mpic; 45 struct resource r; 46 struct device_node *np; 47 unsigned long root = of_get_flat_dt_root(); 48 49 np = of_find_node_by_type(NULL, "open-pic"); 50 if (np == NULL) { 51 printk(KERN_ERR "Could not find open-pic node\n"); 52 return; 53 } 54 55 if (of_address_to_resource(np, 0, &r)) { 56 printk(KERN_ERR "Failed to map mpic register space\n"); 57 of_node_put(np); 58 return; 59 } 60 61 if (of_flat_dt_is_compatible(root, "fsl,MPC85XXRDB-CAMP")) { 62 mpic = mpic_alloc(np, r.start, 63 MPIC_PRIMARY | 64 MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | 65 MPIC_SINGLE_DEST_CPU, 66 0, 256, " OpenPIC "); 67 } else { 68 mpic = mpic_alloc(np, r.start, 69 MPIC_PRIMARY | MPIC_WANTS_RESET | 70 MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | 71 MPIC_SINGLE_DEST_CPU, 72 0, 256, " OpenPIC "); 73 } 74 75 BUG_ON(mpic == NULL); 76 of_node_put(np); 77 78 mpic_init(mpic); 79 80 } 81 82 /* 83 * Setup the architecture 84 */ 85 #ifdef CONFIG_SMP 86 extern void __init mpc85xx_smp_init(void); 87 #endif 88 static void __init mpc85xx_rdb_setup_arch(void) 89 { 90 #ifdef CONFIG_PCI 91 struct device_node *np; 92 #endif 93 94 if (ppc_md.progress) 95 ppc_md.progress("mpc85xx_rdb_setup_arch()", 0); 96 97 #ifdef CONFIG_PCI 98 for_each_node_by_type(np, "pci") { 99 if (of_device_is_compatible(np, "fsl,mpc8548-pcie")) 100 fsl_add_bridge(np, 0); 101 } 102 103 #endif 104 105 #ifdef CONFIG_SMP 106 mpc85xx_smp_init(); 107 #endif 108 109 printk(KERN_INFO "MPC85xx RDB board from Freescale Semiconductor\n"); 110 } 111 112 static struct of_device_id __initdata mpc85xxrdb_ids[] = { 113 { .type = "soc", }, 114 { .compatible = "soc", }, 115 { .compatible = "simple-bus", }, 116 { .compatible = "gianfar", }, 117 {}, 118 }; 119 120 static int __init mpc85xxrdb_publish_devices(void) 121 { 122 return of_platform_bus_probe(NULL, mpc85xxrdb_ids, NULL); 123 } 124 machine_device_initcall(p2020_rdb, mpc85xxrdb_publish_devices); 125 machine_device_initcall(p1020_rdb, mpc85xxrdb_publish_devices); 126 127 /* 128 * Called very early, device-tree isn't unflattened 129 */ 130 static int __init p2020_rdb_probe(void) 131 { 132 unsigned long root = of_get_flat_dt_root(); 133 134 if (of_flat_dt_is_compatible(root, "fsl,P2020RDB")) 135 return 1; 136 return 0; 137 } 138 139 static int __init p1020_rdb_probe(void) 140 { 141 unsigned long root = of_get_flat_dt_root(); 142 143 if (of_flat_dt_is_compatible(root, "fsl,P1020RDB")) 144 return 1; 145 return 0; 146 } 147 148 define_machine(p2020_rdb) { 149 .name = "P2020 RDB", 150 .probe = p2020_rdb_probe, 151 .setup_arch = mpc85xx_rdb_setup_arch, 152 .init_IRQ = mpc85xx_rdb_pic_init, 153 #ifdef CONFIG_PCI 154 .pcibios_fixup_bus = fsl_pcibios_fixup_bus, 155 #endif 156 .get_irq = mpic_get_irq, 157 .restart = fsl_rstcr_restart, 158 .calibrate_decr = generic_calibrate_decr, 159 .progress = udbg_progress, 160 }; 161 162 define_machine(p1020_rdb) { 163 .name = "P1020 RDB", 164 .probe = p1020_rdb_probe, 165 .setup_arch = mpc85xx_rdb_setup_arch, 166 .init_IRQ = mpc85xx_rdb_pic_init, 167 #ifdef CONFIG_PCI 168 .pcibios_fixup_bus = fsl_pcibios_fixup_bus, 169 #endif 170 .get_irq = mpic_get_irq, 171 .restart = fsl_rstcr_restart, 172 .calibrate_decr = generic_calibrate_decr, 173 .progress = udbg_progress, 174 }; 175